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<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
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<body>
    <script>
        function createIncrementor(a) {
            const fn = () => {
              a++
                return  a
            }

            return fn
        }
        const incrementor = createIncrementor(10)
        console.log(incrementor());
        console.log(incrementor());
        console.log(incrementor());

    </script>
</body>

</html>